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SAI INTERNATIONAL SCHOOL
                                                       Class8
                                                Home Assignment
                                                 Subject-Physics
                                                     CH-Sound
                                             Subtopic-Introduction

           INSTRUCTIONS:
                 Please solve or paste the worksheet in the Physics Copy.
                 For Assertion& Reason question follow the following directions.
            DIRECTION: Each of these questions contains an Assertion followed by Reason. Read them carefully
            and answer the question on the basis of following options. You have to select the one that best describes
            the two statements.
            (a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
            (b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
            (c) If Assertion is correct but Reason is incorrect.
            (d) If Assertion is incorrect but Reason is correct.
            (e) If Assertion & Reason both are incorrect.
                1.                                                                                         1
                    Assertion (A): When lightning occurs, the sound is heard a little after the flash
                    is seen.
                    Reason (R): The velocity of light is greater than that of the sound.
            Fill in the blanks
                2.    The to and fro or back and forth motion of an object is called ________.             1
                3.    Sound is a form of _________.                                                        1
                4.    Sound is produced by a __________ body.                                              1
            MCQ
                5.    Sound is kind of                                                                     1
                          a.  Work
                          b.  Energy
                          c.  Force
                          d.  None
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